Speed up Travis with Conda
Speed up Travis with Conda

By using conda packages for the SciPy stack we avoid the need to compile
numpy and the rest from scratch each time. This should increase the
speed of the builds dramatically.

Signed-off-by: Jonas Kalderstam <35a2c6fae61f8077aab61faa4019722abf05093c@kalderstam.se>

wavelets/lifelines,CamDavidsonPilon/lifelines,nerdless/lifelines,jstoxrocky/lifelines